/Engine/Source/Runtime/Core/Public/Misc/MTAccessDetector.h
A TLS stack of destruction sentinels shared by all access detector instances on the callstack. the same access detector instance can have multiple destruction sentinels on the stack. the next "release access" with destruction sentinel always matches the top of the stack
typedef [TArray](API\Runtime\Core\Containers\TArray)< [FDestructionSentinel](API\Runtime\Core\Misc\FMRSWRecursiveAccessDetector\FDestructionSentinel) *, TInlineAllocator< 4 >> FDestructionSentinelStackTls